Shown with a cast-on count of 2 stitches.  

• Row 1 (RS): Yo, k2, yo (4 sts).
• Rows 2, 4, 6, 10, 12, 14, 18, 20, 22, 26, 28, 30, 32, 34, 36, and 38: Purl.
• Row 3: Yo, k4, yo (6 sts).
• Row 5: Yo, k6, yo (8 sts).
• Row 7: Yo, *1/1 LC, k2tog, [yo] twice, ssk, 1/1 RC, repeat from *, yo (10 sts).
• Rows 8, 16, and 24: P1, *p3, k1, p4, repeat from * to last st, p1.
• Row 9: Yo, k1, *k1, yo, ssk, k2, k2tog, yo, k1, repeat from * to last st, k1, yo (12 sts).
• Row 11: Yo, k2, *k2, yo, ssk, k2tog, yo, k2, repeat from * to last 2 sts, k2, yo (14 sts).
• Row 13: Yo, k3, *k3, 1/1 RC, k3, repeat from * to last 3 sts, k3, yo (multiple of 8 sts, plus 8).
• Rows 15 and 23: Yo, *1/1 LC, k2tog, [yo] twice, ssk, 1/1 RC, repeat from *, yo (multiple of 8 sts, plus 2).
• Rows 17 and 25: Yo, k1, *k1, yo, ssk, k2, k2tog, yo, k1, repeat from * to last st, k1, yo (multiple of 8 sts, plus 4).
• Rows 19 and 27: Yo, k2, *k2, yo, ssk, k2tog, yo, k2, repeat from * to last 2 sts, k2, yo (multiple of 8 sts, plus 6).
• Row 21: Yo, k3, *k3, 1/1 LC, k3, repeat from * to last 3 sts, k3, yo (multiple of 8 sts, plus 8).
• Row 29: Yo, k6, *yo, k2, yo, k1, k2tog, ssk, k1, repeat from * to last 8 sts, yo, k2, yo, k6, yo (multiple of 8 sts, plus 18).
• Row 31: Yo, k2, k2tog, ssk, k2, *yo, k2, yo, k1, k2tog, ssk, k1, repeat from * to last 10 sts, yo, k2, yo, k2, k2tog, ssk, k2, yo.
• Row 33: Yo, k8, *yo, k2, yo, k1, k2tog, ssk, k1, repeat from * to last 10 sts, yo, k2, yo, k8, yo (multiple of 8 sts, plus 22).
• Row 35: Yo, k3, k2tog, ssk, k3, *yo, k2, yo, k1, k2tog, ssk, k1, repeat from * to last 12 sts, yo, k2, yo, k3, k2tog, ssk, k3, yo.
• Row 37: Yo, k10, *yo, k2, yo, k1, k2tog, ssk, k1, repeat from * to last 12 sts, yo, k2, yo, k10, yo (multiple of 8 sts, plus 26).
• Repeat rows 13-28.